The Cabernet glass is perfect for full-bodied, complex red wines high in tannin. Its diamond shape works beautifully for big and bold New World wines as the extreme angles offer more space to develop aromas. The generous size of this glass emphasizes fruit, smooths out the tannin's rough edges and bitter qualities, and allows wines to achieve balance. This product is made of clear crystal glass. The Extreme glasses are named after their extreme contours. The bowls mimic polished diamonds and their wide angles allow plenty of room for the wine to breathe. They are specifically designed to enhance and emphasize the pleasant softness and generally fruity notes of the New World wines.